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Usimov [2.4K]
3 years ago
12

15 POINTS!!!!!!!!

Mathematics
2 answers:
Novay_Z [31]3 years ago
4 0
X2=9 has only one solution, which is 4.5
Naddik [55]3 years ago
4 0

Answer:

x2=9 has only one solution, which is 4.5

Step-by-step explanation:

that is the answer

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katen-ka-za [31]

Answer:

B. $5039.58

Step-by-step explanation:

compound interest formula: amount = p(1 + \frac{r}{n})^{nt}

p= principal ($2,300)

r= interest rate as a decimal (4% = 0.04)

n= number of times the principal is compounded per year (annually = onceper year so 1 time per year)

t= time in years (20 years)

new equation: amount = 2300(1+\frac{0.04}{1} )^{1*20}

That equation equals $2,739.58 which you add to the principal.

$2,739.58 + $2,300 = $5039.58

hope this helps :)

7 0
3 years ago
Read 2 more answers
A 46 gram sample of a substance that is used to sterilize surgical instruments has a k-value of 0.1374. Find the substance's hal
mars1129 [50]

Answer:

  t=5.0days

Step-by-step explanation:

Using the formula for the exponential decay that is N=N_{0}e^{-kt}, we have N=\frac{1}{2}{\times}46=23, N_{0}=46 and k=0.1374.

Thus, N=N_{0}e^{-kt} becomes

23=46{\times}e^{-0.1374t}

\frac{23}{46}=e^{-0.1374t}

\frac{1}{2}=e^{-0.1374t}

Taking log on both sides, we get

ln(\frac{1}{2})={-0.1374t}

t=\frac{ln\frac{1}{2}}{-0.1}

t=\frac{-0.6931}{-0.1374}

t=5.0days

4 0
3 years ago
Please need help thank you
jenyasd209 [6]

Answer:

q.4 is 24 pages

q.5 is 27 yrs. old

7 0
3 years ago
What is the proportional relationship show in 8 tablespoons of honey for every 10 cups of flour.
elena55 [62]

Answer:

4 : 5

Step-by-step explanation:

8 : 10

4 : 5

hope this was helpful : )

6 0
3 years ago
Which is NOT a property of a parallelogram?
Elena L [17]

diagonals are congruent

3 0
3 years ago
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